705640818554 has 32 divisors (see below), whose sum is σ = 1219289106816. Its totient is φ = 300014170560.

The previous prime is 705640818527. The next prime is 705640818557. The reversal of 705640818554 is 455818046507.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 705640818496 and 705640818505.

It is not an unprimeable number, because it can be changed into a prime (705640818557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5906864 + ... + 6025140.

It is an arithmetic number, because the mean of its divisors is an integer number (38102784588).

Almost surely, 2^705640818554 is an apocalyptic number.

705640818554 is a deficient number, since it is larger than the sum of its proper divisors (513648288262).

705640818554 is a wasteful number, since it uses less digits than its factorization.

705640818554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121670.

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 705640818554 in words is "seven hundred five billion, six hundred forty million, eight hundred eighteen thousand, five hundred fifty-four".